This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3277 |
| 4 | 2483739 |
| 5 | 1156102209 |
| 6 | 443469188267 |
| 7 | 156475306087585 |
| 8 | 53194863262703203 |
| 9 | 17785402102372820321 |
| 10 | 5902647043581987876939 |
| 11 | 1952635794694419540863057 |
| 12 | 645038537405519790637628675 |
| 13 | 212955626342843141187623423793 |
| 14 | 70288152907297654332280282998411 |